Question

How do I test if requestStream is closed and disposed if the exception occurs

Try
    Using requestStream As Stream = rqst.GetRequestStream()

        requestStream.Write(fle, 0, fle.Length)

        Throw New ApplicationException("Exception Occured")

    End Using


Catch ex As Exception

    MessageBox.Show(ex.Message.ToString())

Finally
    'test if the requeststream is closed and disposed?
    MessageBox.Show("")

End Try

Answer 1

That’s what Using does. Even if there’s an exception, using causes the compiler to bake in a finally clause that will call Dispose.

No need to do it again.